Beispiel #1
0
    def _write_network(self, settings):
        entries = net_util.translate_network(settings)
        nameservers = []
        searchdomains = []
        dev_names = entries.keys()
        for (device, info) in entries.items():
            # Skip the loopback interface.
            if device.startswith('lo'):
                continue

            dev = self.getnetifname(device)

            LOG.info('Configuring interface %s', dev)

            if info.get('bootproto') == 'static':
                LOG.debug('Configuring dev %s with %s / %s', dev,
                          info.get('address'), info.get('netmask'))
                # Configure an ipv4 address.
                ifconfig = (info.get('address') + ' netmask ' +
                            info.get('netmask'))

                # Configure the gateway.
                self.updatercconf('defaultrouter', info.get('gateway'))

                if 'dns-nameservers' in info:
                    nameservers.extend(info['dns-nameservers'])
                if 'dns-search' in info:
                    searchdomains.extend(info['dns-search'])
            else:
                ifconfig = 'DHCP'

            self.updatercconf('ifconfig_' + dev, ifconfig)

        # Try to read the /etc/resolv.conf or just start from scratch if that
        # fails.
        try:
            resolvconf = ResolvConf(util.load_file(self.resolv_conf_fn))
            resolvconf.parse()
        except IOError:
            util.logexc(LOG, "Failed to parse %s, use new empty file",
                        self.resolv_conf_fn)
            resolvconf = ResolvConf('')
            resolvconf.parse()

        # Add some nameservers
        for server in nameservers:
            try:
                resolvconf.add_nameserver(server)
            except ValueError:
                util.logexc(LOG, "Failed to add nameserver %s", server)

        # And add any searchdomains.
        for domain in searchdomains:
            try:
                resolvconf.add_search_domain(domain)
            except ValueError:
                util.logexc(LOG, "Failed to add search domain %s", domain)
        util.write_file(self.resolv_conf_fn, str(resolvconf), 0o644)

        return dev_names
Beispiel #2
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def update_resolve_conf_file(fn, dns_servers, search_servers):
    try:
        r_conf = ResolvConf(util.load_file(fn))
        r_conf.parse()
    except IOError:
        util.logexc(LOG, "Failed at parsing %s reverting to an empty " "instance", fn)
        r_conf = ResolvConf("")
        r_conf.parse()
    if dns_servers:
        for s in dns_servers:
            try:
                r_conf.add_nameserver(s)
            except ValueError:
                util.logexc(LOG, "Failed at adding nameserver %s", s)
    if search_servers:
        for s in search_servers:
            try:
                r_conf.add_search_domain(s)
            except ValueError:
                util.logexc(LOG, "Failed at adding search domain %s", s)
    util.write_file(fn, str(r_conf), 0644)
Beispiel #3
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    def _write_network(self, settings):
        entries = net_util.translate_network(settings)
        nameservers = []
        searchdomains = []
        dev_names = entries.keys()
        for (device, info) in entries.items():
            # Skip the loopback interface.
            if device.startswith('lo'):
                continue

            dev = self.getnetifname(device)

            LOG.info('Configuring interface %s', dev)

            if info.get('bootproto') == 'static':
                LOG.debug('Configuring dev %s with %s / %s', dev,
                          info.get('address'), info.get('netmask'))
                # Configure an ipv4 address.
                ifconfig = (info.get('address') + ' netmask ' +
                            info.get('netmask'))

                # Configure the gateway.
                self.updatercconf('defaultrouter', info.get('gateway'))

                if 'dns-nameservers' in info:
                    nameservers.extend(info['dns-nameservers'])
                if 'dns-search' in info:
                    searchdomains.extend(info['dns-search'])
            else:
                ifconfig = 'DHCP'

            self.updatercconf('ifconfig_' + dev, ifconfig)

        # Try to read the /etc/resolv.conf or just start from scratch if that
        # fails.
        try:
            resolvconf = ResolvConf(util.load_file(self.resolv_conf_fn))
            resolvconf.parse()
        except IOError:
            util.logexc(LOG, "Failed to parse %s, use new empty file",
                        self.resolv_conf_fn)
            resolvconf = ResolvConf('')
            resolvconf.parse()

        # Add some nameservers
        for server in nameservers:
            try:
                resolvconf.add_nameserver(server)
            except ValueError:
                util.logexc(LOG, "Failed to add nameserver %s", server)

        # And add any searchdomains.
        for domain in searchdomains:
            try:
                resolvconf.add_search_domain(domain)
            except ValueError:
                util.logexc(LOG, "Failed to add search domain %s", domain)
        util.write_file(self.resolv_conf_fn, str(resolvconf), 0o644)

        return dev_names
Beispiel #4
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    def _write_resolve_conf(self, settings, target=None):
        nameservers = settings.dns_nameservers
        searchdomains = settings.dns_searchdomains
        for interface in settings.iter_interfaces():
            for subnet in interface.get("subnets", []):
                if 'dns_nameservers' in subnet:
                    nameservers.extend(subnet['dns_nameservers'])
                if 'dns_search' in subnet:
                    searchdomains.extend(subnet['dns_search'])
        # Try to read the /etc/resolv.conf or just start from scratch if that
        # fails.
        try:
            resolvconf = ResolvConf(
                util.load_file(util.target_path(target, self.resolv_conf_fn)))
            resolvconf.parse()
        except IOError:
            util.logexc(LOG, "Failed to parse %s, use new empty file",
                        util.target_path(target, self.resolv_conf_fn))
            resolvconf = ResolvConf('')
            resolvconf.parse()

        # Add some nameservers
        for server in nameservers:
            try:
                resolvconf.add_nameserver(server)
            except ValueError:
                util.logexc(LOG, "Failed to add nameserver %s", server)

        # And add any searchdomains.
        for domain in searchdomains:
            try:
                resolvconf.add_search_domain(domain)
            except ValueError:
                util.logexc(LOG, "Failed to add search domain %s", domain)
        util.write_file(util.target_path(target, self.resolv_conf_fn),
                        str(resolvconf), 0o644)
Beispiel #5
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def update_resolve_conf_file(fn, dns_servers, search_servers):
    try:
        r_conf = ResolvConf(util.load_file(fn))
        r_conf.parse()
    except IOError:
        util.logexc(LOG, "Failed at parsing %s reverting to an empty "
                    "instance", fn)
        r_conf = ResolvConf('')
        r_conf.parse()
    if dns_servers:
        for s in dns_servers:
            try:
                r_conf.add_nameserver(s)
            except ValueError:
                util.logexc(LOG, "Failed at adding nameserver %s", s)
    if search_servers:
        for s in search_servers:
            try:
                r_conf.add_search_domain(s)
            except ValueError:
                util.logexc(LOG, "Failed at adding search domain %s", s)
    util.write_file(fn, str(r_conf), 0o644)
Beispiel #6
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def update_resolve_conf_file(fn, dns_servers, search_servers):
    try:
        r_conf = ResolvConf(util.load_file(fn))
        r_conf.parse()
        empty = False
    except IOError:
        LOG.info("Failed at parsing %s creating an empty instance", fn)
        r_conf = ResolvConf('')
        r_conf.parse()
        empty = True
    if dns_servers:
        for s in dns_servers:
            try:
                r_conf.add_nameserver(s)
                empty = False
            except ValueError:
                util.logexc(LOG, "Failed at adding nameserver %s", s)
    if search_servers:
        for s in search_servers:
            try:
                r_conf.add_search_domain(s)
            except ValueError:
                util.logexc(LOG, "Failed at adding search domain %s", s)
    if empty is False:
        write_resolv_conf_file(fn, r_conf)
Beispiel #7
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def remove_resolve_conf_file(fn):
    r_conf = ResolvConf('')
    r_conf.parse()
    write_resolv_conf_file(fn, r_conf)
Beispiel #8
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def remove_resolve_conf_file(fn):
    r_conf = ResolvConf('')
    r_conf.parse()
    write_resolv_conf_file(fn, r_conf)